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Example of wake up detection for LIS2DW12 in X-NUCLEO-IKS01A3
Dependencies: X_NUCLEO_IKS01A3
Wake up Demo Application with LIS2DW12 based on sensor expansion board X-NUCLEO-IKS01A3
Main function is to show how to detect the wake up event using the sensor expansion board and send a notification using UART to a connected PC or Desktop and display it on terminal applications like TeraTerm.
After connection has been established:
- the user can try to shake the board and then view the notification using an hyper terminal. When the wake up event is detected, the LED is switched on for a while.
- the user button can be used to enable/disable the wake up detection feature.
main.cpp
- Committer:
- cparata
- Date:
- 2019-07-24
- Revision:
- 5:69cd10d5ca51
- Parent:
- 0:276fc25c1c41
- Child:
- 6:57d0454ddd40
File content as of revision 5:69cd10d5ca51:
/** ****************************************************************************** * @file main.cpp * @author SRA * @version V1.0.0 * @date 5-March-2019 * @brief Simple Example application for using the X_NUCLEO_IKS01A3 * MEMS Inertial & Environmental Sensor Nucleo expansion board. ****************************************************************************** * @attention * * <h2><center>© COPYRIGHT(c) 2019 STMicroelectronics</center></h2> * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************** */ /* Includes */ #include "mbed.h" #include "XNucleoIKS01A3.h" /* Instantiate the expansion board */ static XNucleoIKS01A3 *mems_expansion_board = XNucleoIKS01A3::instance(D14, D15, D4, D5, A3, D6, A4); /* Retrieve the composing elements of the expansion board */ static LIS2DW12Sensor *accelerometer = mems_expansion_board->accelerometer; InterruptIn mybutton(USER_BUTTON); DigitalOut myled(LED1); volatile int mems_event = 0; volatile int toggle_wake_up_enable = 0; static int wake_up_is_enabled = 1; void pressed_cb(); void INT1_cb(); /* Simple main function */ int main() { /* Attach callback to User button press */ mybutton.fall(&pressed_cb); /* Attach callback to LIS2DW12 INT1 */ accelerometer->attach_int1_irq(&INT1_cb); /* Enable LIS2DW12 accelerometer */ accelerometer->enable_x(); /* Enable Wake-Up Detection. */ accelerometer->enable_wake_up_detection(); printf("\r\n--- Starting new run ---\r\n"); while (1) { if (toggle_wake_up_enable) { toggle_wake_up_enable = 0; if (wake_up_is_enabled == 0) { accelerometer->enable_wake_up_detection(); wake_up_is_enabled = 1; } else { accelerometer->disable_wake_up_detection(); wake_up_is_enabled = 0; } } if (mems_event) { mems_event = 0; LIS2DW12_Event_Status_t status; accelerometer->get_event_status(&status); if (status.WakeUpStatus) { /* Led blinking. */ myled = 1; wait(0.2); myled = 0; /* Output data. */ printf("Wake Up Detected!\r\n"); } } } } void pressed_cb() { toggle_wake_up_enable = 1; } void INT1_cb() { mems_event = 1; }